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- /* Copyright (C) 2005, 2007 Free Software Foundation, Inc.
- This file is part of the GNU C Library.
- The GNU C Library is free software; you can redistribute it and/or
- modify it under the terms of the GNU Lesser General Public
- License as published by the Free Software Foundation; either
- version 2.1 of the License, or (at your option) any later version.
- The GNU C Library is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Lesser General Public License for more details.
- You should have received a copy of the GNU Lesser General Public
- License along with the GNU C Library; if not, see
- <http://www.gnu.org/licenses/>. */
- #include "sysdep.h"
- #include <sys/syscall.h>
- #define PAGE_SHIFT 12
- /* __ptr_t __mmap (a2 = __ptr_t addr,
- a3 = size_t len,
- a4 = int prot,
- a5 = int flags,
- a6 = int fd,
- a7 = off_t offset) */
- ENTRY (__mmap)
- /* We only support mmap2 in the kernel, so shift offset by
- page - size. */
- mov a8, a6
- mov a6, a2
- movi a2, SYS_ify (mmap2)
- srli a9, a7, PAGE_SHIFT
- /* syscall (a2 = NR_mmap2,
- a6 = arg0,
- a3 = arg1,
- a4 = arg2,
- a5 = arg3,
- a8 = arg4,
- a9 = arg5) */
- syscall
- bltz a2, SYSCALL_ERROR_LABEL
- .Lpseudo_end:
- retw
- PSEUDO_END (__mmap)
- weak_alias (__mmap, mmap)
- libc_hidden_weak (mmap)
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